docs: point repo URLs back at simtabi/claude-code-install-manager

The repo was briefly created under the laranail org while shipping
v0.1.0. The canonical home is simtabi/claude-code-install-manager;
the repo has been transferred and GitHub redirects the old URLs.
Update the three places that hardcoded the laranail path so
external links stop relying on the redirect.

Author: imanimanyara

.github/ISSUE_TEMPLATE/config.yml

@@ -2,7 +2,7 @@ blank_issues_enabled: false
 
 contact_links:
   - name: Security vulnerability
-    url: https://github.com/laranail/claude-code-install-manager/security/policy
+    url: https://github.com/simtabi/claude-code-install-manager/security/policy
     about: |
       Do NOT file a public issue for security problems. See SECURITY.md
       for the private disclosure address (opensource@simtabi.com).

.github/RELEASE_NOTES_TEMPLATE.md

@@ -55,4 +55,4 @@ This is a per-user tool. To upgrade in place:
 
 ## Full change list
 
-See [CHANGELOG.md](https://github.com/laranail/claude-code-install-manager/blob/main/CHANGELOG.md).
+See [CHANGELOG.md](https://github.com/simtabi/claude-code-install-manager/blob/main/CHANGELOG.md).

CHANGELOG.md

@@ -133,5 +133,5 @@ First public release.
 - Release notes template with stable Artifacts / Verifying /
   Upgrading sections.
 
-[Unreleased]: https://github.com/laranail/claude-code-install-manager/compare/v0.1.0...HEAD
-[0.1.0]: https://github.com/laranail/claude-code-install-manager/releases/tag/v0.1.0
+[Unreleased]: https://github.com/simtabi/claude-code-install-manager/compare/v0.1.0...HEAD
+[0.1.0]: https://github.com/simtabi/claude-code-install-manager/releases/tag/v0.1.0